2013 rings in more dovish Fed and maybe some dissent

CHICAGO (Reuters) - The Federal Reserve may tip toward doing even more to boost the U.S. economy in 2013 as two outspoken advocates for a super-easy monetary stance rotate into voting spots on its policy panel.

The annual shuffle of voters also raises the possibility of more dissents, analysts said, but not enough to offset the small but noticeable dovish shift.

Incoming voters Charles Evans, who leads the Chicago Federal Reserve Bank, and Eric Rosengren of the Boston Fed have argued that the central bank needs to go beyond its already aggressive easing of monetary policy to bring down unemployment.

They are also at the forefront of efforts to adopt numerical thresholds for unemployment and inflation that would underscore the Fed's willingness to keep policy easy for a long, long time.

The new lineup, which will be in place for the Fed's first meeting of 2013 in late January, "tilts slightly more in favor of further accommodation," said Michael Gapen, an economist at Barclays, in New York.

The Fed has kept interest rates near zero since December 2008 and expects to keep them there until at least mid-2015. It has also bought $2.3 trillion in long-term securities and is expected to announce more purchases on Wednesday after a two-day meeting.

Next year, it will wrestle with the question of just how far it should go.